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Real-time infrared image target tracking method

An infrared image and target tracking technology, applied in the field of infrared image target tracking, to avoid a large number of calculations, easy hardware implementation, and improve stability

Active Publication Date: 2011-04-06
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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AI Technical Summary

Problems solved by technology

Therefore, many mature and excellent algorithms in the current TV video tracking are difficult to be directly applied to infrared image target tracking, and it is necessary to improve the characteristics of infrared images.
In addition, the algorithm must meet the real-time processing requirements of the 50Hz image frame rate of the infrared sensor

Method used

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Embodiment Construction

[0035] The following takes a certain type of infrared tracking system as an example, combined with the accompanying drawings, to introduce the algorithm flow in detail. Infrared tracking systems use staring infrared cameras to acquire infrared images. The frame rate of the staring thermal imaging camera is 50Hz, and the image resolution is 320×240. The image is transmitted to the special image processing board through the optical fiber to complete the real-time target tracking processing of the infrared image. The special image processing board adopts DSP+FPGA design, and the algorithm is reasonably distributed to two processors to meet the needs of real-time processing.

[0036] Step 1, image preprocessing, input the infrared image, perform enhancement processing on the image, and output the enhanced image.

[0037]The Laplace operator is an isotropic second-order differential filter. The Laplace transform of a two-dimensional image I(x, y) is defined as:

[0038] ...

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Abstract

The invention discloses a real-time infrared image target tracking method which comprises the following steps of: inputting an infrared image, carrying out strengthening treatment on the image and outputting a strengthened image; inputting n image templates and respectively carrying out correlation matching on the n image templates in a wave door area to obtain n correlation values and correlation matching positions, wherein n is a natural number which is larger than 1; updating n template images according to the correlation values and the correlation matching positions, deciding the final target matching position of the frame by combining the n correlation values, the n target matching positions and tracking calculation information and outputting a target matching position; maintaining the estimation on a target tracking state by utilizing a Kalman filter according to the target matching position and outputting a tracking wave door area; and inputting a new frame of image and returning to the first step. The invention has the advantages of strengthening the edge and detail information of an infrared image by using a sharpening filter, improving the definition of the infrared image and being beneficial to improving the target tracking stability by a plurality of templates.

Description

technical field [0001] The invention relates to an infrared image target tracking method, in particular to an infrared image target tracking method meeting real-time processing requirements. Background technique [0002] At present, photoelectric technology has become one of the core technologies and important means in military reconnaissance, surveillance and early warning. Among them, the infrared detection system is an important application field of military optoelectronic technology, which has passive detection, day and night work, and real-time imaging. The advantages of anti-electromagnetic interference have been increasingly valued by the military and scientific research departments of various countries, and it has become a hot research direction of military optoelectronic technology. [0003] Infrared image target tracking is the precondition for the infrared detection system to provide real-time, continuous and accurate target azimuth, elevation and image-related i...

Claims

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Application Information

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IPC IPC(8): G06T7/20G06K9/64
Inventor 孙宁蒋怡亮翟尚礼
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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